Medical Residency question?

[Angad]

Suppose I obtain a M.D. degree in the U.S. Can I then apply for a residency program in Canada or England, or would they not accept my M.D.?

On the other hand, suppose I complete a residency program in the U.S. (Lets say, Internal Medicine). Can I then go to Canada or England for my fellowship, or will they not honor my American residency.

And finally, if I complete everything up to a fellowship (M.D., residency, and fellowship) in the U.S., am I eligible for a job in Canada and England, or would they not honor my medical training? To what extent would they honor it?

To what point are the degrees and levels of education transferrable between the three countries (US, England, Canada)?

Please help me... my life's track depends on knowing the answers to these questions.